There’s a big change in Tesco meal deals that is causing lunchtime outrage across the country.

Or rather a "little" change...

Customers who regularly pick up their Tesco meal deal for lunch have found that the chain has swapped the 500ml bottles of Coca-Cola and Pepsi, for a new, smaller 375ml version.

But, even though the supermarket giant has switched to Lilliputian fizzy drinks, it is still charging the same £3 price, the Mirror reports.

But, before you set up a picket outside Tesco, be aware that the new change in bottle size doesn't have anything to do with the store chain and is, in fact, down to the newly initiated sugar tax, which officially hits the UK today (April 6).

So we assume all the other supermarkets are set to follow soon.

The new 375ml bottle of Pepsi and the old 500ml bottle that used to be included in the Tesco meal deal (Image: Daily Mirror)

Seeing as the likes of Pepsi, Coca-cola and Old Jamaican Ginger Beer have all refused to change their recipe, the meal deal-size drinks will now be a lot smaller to make room for the tax price hike.

Members of the public have since been venting their frustration about the major downsize on Twitter...